KIDA is a database of kinetic data of interest for astrochemical (interstellar medium and planetary atmospheres) studies.
In addition to the available referenced data, KIDA provides recommendations over a number of important reactions.

Chemists and physicists can add their data to the database through several paths listed here.
Astrophysicists can download the database through the download form.
You need to log in to add or download data.
Forms below allows to consult and download the data.

Bug fixed on nahoon

A new version of the chemical code Nahoon is available.

KIDA Workshop

We are organizing a KIDA worshop on astrochemistry in Paris on May 5 to 7. You are welcome to participate and submit a contribution.

Ex : C will search for all species with C atoms
Ex : O H will search for all species with O or H atoms
Ex : OH will search for all species with O and H atoms
Warning : Second letter of 2-letters elements have to be lowercase, eg Na

Indicate a species (ex: CH, H3O+) or a couple of species (ex: C + H2)
Warning : Second letter of 2-letters elements have to be lowercase, eg Na Species*

Search in

IsomersExact formula (needed for l- and c- forms)

Reactant Product Both

Ion + neutral Neutral

Compute rate coefficient at K

Type of reaction

Download list of reactions

Uni and Bimolecular reactions

Download list of reactions

Termolecular reactions

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KIDA KInetic Database for Astrochemistry
If you have any comments or bug reports, please send an email to